Quick answers
- Which hospitals does Stephen J. Sims work at?
- Medicare's official clinician data lists Stephen J. Sims at 3 hospitals: El Camino Health, Good Samaritan Hospital and Stanford Health Care. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen J. Sims see patients?
- Medicare's clinician data lists 4 practice locations, including Mountain View, CA and Walnut Creek, CA. Call before your visit to confirm the address.
- What is Stephen J. Sims's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Stephen J. Sims accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen J. Sims accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Stephen J. Sims offer telehealth?
- Medicare's clinician data says Stephen J. Sims offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Stephen J. Sims?
- (650) 967-8841, as listed in official Medicare / NPI Registry data.
- What is Stephen J. Sims's NPI number?
- 1568453264. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen J. Sims works
Medicare's Facility Affiliation Data lists Stephen J. Sims at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- El Camino HealthMountain View, CA · Acute Care Hospital · CCN 050308
- Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · CCN 050380
- Stanford Health CareStanford, CA · Acute Care Hospital · CCN 050441
Practice locations
Addresses where Stephen J. Sims is enrolled with Medicare (CMS data updated 2026-10-02).
- 2204 Grant Rd, Suite 103Mountain View, CA 94040 (650) 967‑8841
- 2637 Shadelands DrWalnut Creek, CA 94598
- 365 Lennon LnWalnut Creek, CA 94598
- 525 S Dr, Suite 107Mountain View, CA 94040 (650) 386‑0386
Group practices
Medicare enrollment lists Stephen J. Sims as a member of this group (CMS data updated 2026-10-02).
- Bass Medical Group291 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Mountain View
Clinicians with the same Medicare primary specialty in Mountain View, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1568453264 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians